Passively Q-switched LED-pumped Ce: Nd: YAG laser

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TARKASHVAND M.; FARAHBOD A.H.; HASHEMIZADEH S.A.

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Journal: Iranian Journal of Physics Research Year:2018 | Volume:18 | Issue:3 Page(s): 477-484

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Information Journal Paper

Title

Passively Q-switched LED-pumped Ce: Nd: YAG laser

Author(s)

TARKASHVAND M. | FARAHBOD A.H. | HASHEMIZADEH S.A. | Issue Writer Certificate

Keywords

passive Q-switchQ1

LED pumpingQ1

Ce:Nd:YAG laserQ1

Abstract

The experimental study of passively Q-switched, LED-pumped Ce: Nd: YAG laser is reported. The active medium is a 3 mm diameter laser rod with 60 mm length; it is optically pumped with four segments of blue LEDs at 460 nm, with each segment consisting of 32 single LEDs. The 14 cm length optical resonator with 2 dielectric mirrors and the reflectivity of 99 and 93 percent at 1064 nm produced more than 200 micro-joules laser spikes at the free-running mode of operation. By using a passive optical switch with 96% initial transmission and 0. 6 J electrical pumping energy, the single Q-switch (QS) laser pulse with 240 ns pulse-width and 17 micro-joules optical energy was produced. By increasing the pumping energy to 1. 2 J, two nearly similar QS laser pulses were generated. Moreover, we have proposed a method for decreasing the pulse-width and increasing the energy of single QS laser pulse that is based on controlling the pumping rate by shaping the current of LEDs.

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APA: Copy

TARKASHVAND, M., FARAHBOD, A.H., & HASHEMIZADEH, S.A.. (2018). Passively Q-switched LED-pumped Ce: Nd: YAG laser. IRANIAN JOURNAL OF PHYSICS RESEARCH, 18(3 ), 477-484. SID. https://sid.ir/paper/1853/en

Vancouver: Copy

TARKASHVAND M., FARAHBOD A.H., HASHEMIZADEH S.A.. Passively Q-switched LED-pumped Ce: Nd: YAG laser. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2018;18(3 ):477-484. Available from: https://sid.ir/paper/1853/en

IEEE: Copy

M. TARKASHVAND, A.H. FARAHBOD, and S.A. HASHEMIZADEH, “Passively Q-switched LED-pumped Ce: Nd: YAG laser,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 18, no. 3 , pp. 477–484, 2018, [Online]. Available: https://sid.ir/paper/1853/en

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